Pith Number

pith:FJAIRVOI

pith:2012:FJAIRVOISWT6B6RCIQMSITZ3QD

not attested not anchored not stored refs pending

A new approach to Whitehead's asphericity question

Elias Gabriel Minian, Manuela Ana Cerdeiro

arxiv:1203.5348 v1 · 2012-03-23 · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FJAIRVOISWT6B6RCIQMSITZ3QD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:59:15.278015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a4088d5c895a7e0fa224419244f3b80dcaf5c55923d2dbda60b309ff26c6454

Aliases

arxiv: 1203.5348 · arxiv_version: 1203.5348v1 · doi: 10.48550/arxiv.1203.5348 · pith_short_12: FJAIRVOISWT6 · pith_short_16: FJAIRVOISWT6B6RC · pith_short_8: FJAIRVOI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FJAIRVOISWT6B6RCIQMSITZ3QD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2a4088d5c895a7e0fa224419244f3b80dcaf5c55923d2dbda60b309ff26c6454

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3bb0b6894daa9cdc3c0b54451dd1da768bc8df8387ea095613d8f88a519d845",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-03-23T20:25:49Z",
    "title_canon_sha256": "0c69a1fede975045aefb2d40c59b5db9d84c7b13685e443c7be90bbb6bb17224"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5348",
    "kind": "arxiv",
    "version": 1
  }
}